TeV photons and Neutrinos from giant soft-gamma repeaters flares
During the last 35 years three giant flares were observed from so-called Soft Gamma Repeaters (SGR's). They are assumed to be associated with star-quakes of pulsars accelerating electrons and, possibly, protons to high energy in the huge magnetic fields as inferred from the observations. Becaus...
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ftcern:oai:cds.cern.ch:827928 2023-05-15T13:42:46+02:00 TeV photons and Neutrinos from giant soft-gamma repeaters flares Halzen, F Landsman, Hagar Yaël Montaruli, T 2005-03-16 http://cds.cern.ch/record/827928 eng eng http://cds.cern.ch/record/827928 astro-ph/0503348 oai:cds.cern.ch:827928 Astrophysics and Astronomy 2005 ftcern 2018-07-28T07:17:04Z During the last 35 years three giant flares were observed from so-called Soft Gamma Repeaters (SGR's). They are assumed to be associated with star-quakes of pulsars accelerating electrons and, possibly, protons to high energy in the huge magnetic fields as inferred from the observations. Because of this and the observation of non-thermal emission it has been speculated that they may be cosmic ray accelerators producing gamma-rays up to TeV energies. Neutrino telescopes, such as AMANDA and the ANTARES now under construction, could be used as TeV-gamma detectors for very short emissions by measuring underground muons produced in $\gamma$ showers. We estimate signal and background rates for TeV photons from SGR giant flares in AMANDA, and we provide an estimate of the gamma shower events that Milagro could detect. Moreover, we consider that, if hadrons are accelerated in these sources, high energy neutrinos would be produced together with photons. These may be detected in neutrino telescopes using neutrino-induced cascades and upgoing muons. We argue that the Antarctic Muon and Neutrino Detector Array AMANDA may have observed the December 27, 2004 giant flare from the soft gamma-ray repeater SGR 1806-20 if the non-thermal component of the spectrum extends to TeV energies (at present the actual data is subject to blind analysis). Rates should be scaled by about two orders of magnitude in km3 detectors, such as IceCube, making SGR flares sources of primary interest. Other/Unknown Material Antarc* Antarctic CERN Document Server (CDS) Antarctic The Antarctic |
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Astrophysics and Astronomy |
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Astrophysics and Astronomy Halzen, F Landsman, Hagar Yaël Montaruli, T TeV photons and Neutrinos from giant soft-gamma repeaters flares |
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Astrophysics and Astronomy |
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During the last 35 years three giant flares were observed from so-called Soft Gamma Repeaters (SGR's). They are assumed to be associated with star-quakes of pulsars accelerating electrons and, possibly, protons to high energy in the huge magnetic fields as inferred from the observations. Because of this and the observation of non-thermal emission it has been speculated that they may be cosmic ray accelerators producing gamma-rays up to TeV energies. Neutrino telescopes, such as AMANDA and the ANTARES now under construction, could be used as TeV-gamma detectors for very short emissions by measuring underground muons produced in $\gamma$ showers. We estimate signal and background rates for TeV photons from SGR giant flares in AMANDA, and we provide an estimate of the gamma shower events that Milagro could detect. Moreover, we consider that, if hadrons are accelerated in these sources, high energy neutrinos would be produced together with photons. These may be detected in neutrino telescopes using neutrino-induced cascades and upgoing muons. We argue that the Antarctic Muon and Neutrino Detector Array AMANDA may have observed the December 27, 2004 giant flare from the soft gamma-ray repeater SGR 1806-20 if the non-thermal component of the spectrum extends to TeV energies (at present the actual data is subject to blind analysis). Rates should be scaled by about two orders of magnitude in km3 detectors, such as IceCube, making SGR flares sources of primary interest. |
author |
Halzen, F Landsman, Hagar Yaël Montaruli, T |
author_facet |
Halzen, F Landsman, Hagar Yaël Montaruli, T |
author_sort |
Halzen, F |
title |
TeV photons and Neutrinos from giant soft-gamma repeaters flares |
title_short |
TeV photons and Neutrinos from giant soft-gamma repeaters flares |
title_full |
TeV photons and Neutrinos from giant soft-gamma repeaters flares |
title_fullStr |
TeV photons and Neutrinos from giant soft-gamma repeaters flares |
title_full_unstemmed |
TeV photons and Neutrinos from giant soft-gamma repeaters flares |
title_sort |
tev photons and neutrinos from giant soft-gamma repeaters flares |
publishDate |
2005 |
url |
http://cds.cern.ch/record/827928 |
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Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
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Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
http://cds.cern.ch/record/827928 astro-ph/0503348 oai:cds.cern.ch:827928 |
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1766172625270210560 |